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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).
The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.